Recent Submissions

  • A combined first-principles computational/experimental study on LiNi 0.66Co 0.17Mn 0.17O 2 as a potential layered cathode material 

    Saavedra-Arias, José; Venkateswara Rao, Chitturi; Shojan, Jifi; Manivannan, Ayyakkannu; Torres, Lorraine; Ishikawa, Yasuyuki; Katiyar, Ram (Elsevier, 2012-08-01)
    First-principles calculations are used to analyze the phase stability, formation energy, and Li intercalation potential for a series of layered cathode materials. The calculations show LiNi 0.66Co 0.17Mn 0.17O 2 as a ...
  • Connecting bioloy, optics and nanomechanical properties in micro-wasps 

    Mora Castro, Rebeca; Hernández-Jiménez, Marcela; Sáenz-Arce, Giovanni; Porras-Peñaranda, Juan; Hanson-Snortum, Paul; Avendaño Soto, Esteban Damian (Springer Nature, 2020-01-29)
    Coloration in insects provides a fruitful opportunity for interdisciplinary research involving both physics and biology, and for a better understanding of the design principles of biological structures. In this research ...
  • β- decay of 65Mn to 65Fe 

    Olaizola, Bruno; Fraille, L.M.; Mach, Henryk; Aprahamian, Ani; Briz, Jose Antonio; Cal-González, J.; Ghita, Dan Gabriel; Köester, U.; Kurcewicz, Wiktor; Lesher, S.R.; Pauwels, Dieter; Picado, Esteban; Poves, Alfredo; Radulov, D.; Simpson, G.S.; Udías, J.M. (American Physical Society, 2013-10-07)
    The low-energy structure of 65Fe has been studied by means of γ and fast-timing spectroscopy at the ISOLDE facility, CERN. A level scheme of 65Fe populated following the β-decay of 65Mn was established for the first time. ...
  • The rock coast of South and Central America 

    Blanco-Chao, Ramon; Pedoja, Kevin; Witt, César; martinod, joseph; Husson, Laurent; Regard, Vincent; Audin, Laurence; Nexer, Maëlle; delcaillau, bernard; Saillard, Marianne; Melnick, Daniel; Dumont, Jean Francois; Santana, Essy; Navarrete, Edison; Martillo, Carlos; PAPPALARDO, MARTA; Ayala, Luis; Araya, J.F.; Feal-Pérez, A.; Correa, D.; Arozarena-Llopis, Isabel (Geological Society Memoirs 2014, 2014-07)
    The great variety of climatic conditions, tidal ranges and wave regimes of South and Central America act on a complex geology and tectonic framework. Many of the rock and cliffed coasts of South America are strongly ...
  • A combined experimental and theoretical study of gas sorption on nanoporous silver triazolato metal-organic frameworks 

    Yang, Guang; Santana, Juan A; Rivera Ramos, Milton E.; García - Ricard, Omar; Saavedra-Arias, José; Ishikawa, Yasuyuki; Hernandez-Maldonado, Arturo; Raptis, Raphael G. (2014-01-01)
    A new silver-triazolate metal-organic framework (MOF), {Ag 3[Ag5(μ3-3,5-tBu 2tz)6](BF4)2}n (2), has been prepared and structurally characterized. The CO2 sorption properties of this new MOF and previously reported isostructural ...
  • Evaluating SODA for Indo-Pacific Ocean decadal climate variability studies 

    Vargas-Hernández , José Mauro ; Wijffels, Susan; Meyers, Gary; Holbrook, Neil (Journal of Geophysical Research: Oceans, 2014-10-31)
    Estimates of changes in upper ocean temperature, heat content, and sea level are dependent on the coverage of subsurface observations in space and time. Historically, these data are sparse, which has limited our understanding ...
  • Nations work together to size up Caribbean tsunami hazards 

    Lopez-Venegas, Alberto; Chacon-Barrantes, Silvia; Zamora, Natalia; Macías - Sánchez, Jorge (AGU.ORG, 2018-10-04)
    El Caribe es conocido por sus playas tropicales y centros de surf, pero no está exento de terremotos y tsunamis. Durante los últimos 500 años, esta región puede haber estado expuesta a aproximadamente 100 tsunamis, de los ...
  • Polycrystalline indium films in the percolation threshold regime: Time correlation between electric conduction and optical properties with film morphology 

    Clark, Neville; Vargas, William E.; Azofeifa, Daniel E.; Sáenz-Arce, Giovanni; Solís, Hugo; Ramírez Hidalgo, Gustavo (IOP Publishing Ltd., 2014-02-21)
    Polycrystalline indium films have been deposited at room temperature by electron beam evaporation on amorphous quartz substrates. Once deposited, electrical resistance and specular reflection of the films, for wavelengths ...
  • Multiparticle emission in the decay of Ar 31 

    Koldste, G.T.; Blank, B.; Borge, M.J.G.; Briz, J.A.; Carmona-Gallardo, M.; Fraile, L.M.; Fynbo, H.O.U.; Giovinazzo, J.; Grann, B.D.; Johansen, J.G.; Jokinen, A.; Jonson, B.; Kurturkian-Nieto, T.; Kusk, J.H.; Nilsson, T.; Perea, A.; Pesudo, V.; Picado, Esteban; Riisager, K.; Saastamoinen, A.; Tengblad, O.; Thomas, J.C.; Van del Walle, J. (American Physical Society, 2014-06-25)
    A multihit capacity setup was used to study the decay of the dripline nucleus 31Ar, produced at the ISOLDE facility at CERN. A spectroscopic analysis of the β-delayed three-proton decay of 31Ar is presented for the first ...
  • Sizeable beta-strength in 31Ar (β3p) decay 

    Koldste, G.T.; Blank, B.; Borge, M.J.G.; Briz, J.A.; Carmona-Gallardo, M.; Fraile, L.M.; Fynbo, H.O.U.; Giovinazzo, J.; Johansen, J.G.; Thomas, J.C.; Jokinen, A.; Jonson, B.; Kurturkian-Nieto, T.; Nilsson, T.; Perea, A.; Pesudo, V.; Picado, Esteban; Riisager, K.; Saastamoinen, A.; Tengblad, O.; Van del Walle, J. (Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2014-10-07)
    We present for the first time precise spectroscopic information on the recently discovered decay mode β-delayed 3p-emission. The detection of the 3p events gives an increased sensitivity to the high energy part of the ...
  • Hidrography and river plumes in Golfo Dulce, South Pacific of Costa Rica 

    Rincón - Alejos, Fernando; Ballestero Sakson, Daniel (Universidad de Costa Rica, 2015-07)
    Oceanographic variables at 33 stations distributed in Golfo Dulce, Costa Rica, during the dry and rainy seasons between 2009 and 2010, were analyzed with CTD profiles, where salinity, temperature, sigma-T and currents were ...
  • The rip current hazard in Costa Rica 

    Arozarena, Isabel; Houser, Chris; Gutiérrez-Echeverría, Alejandro; Brannstrom, Christian (2015-01-31)
    Deaths from rip currents are a major hazard on global beaches, but few data are available at a national scale to support the development of appropriate intervention programs. Analysis of data from the Judicial Investigation ...
  • Slow westward movement of salinity anomalies across the tropical South Indian Ocean 

    Vargas-Hernández , José Mauro ; Wijffels, Susan; Meyers, Gary; Holbrook, Neil (American Geophysical Union, 2015-08-06)
    Decadal salinity variability is an important characteristic of the ocean. It characterizes differences in evaporative and precipitation fluxes at the surface, and in the subsurface it contributes to steric sea level change ...
  • Polymer gel dosimeter based on itaconic acid 

    Mattea, Facundo; Chacón, David; Vedelago, José; Valente, Mauro; Strumia, Miriam (2015-11)
    A new polymeric dosimeter based on itaconic acid and N, N'-methylenebisacrylamide was studied. The preparation method, compositions of monomer and crosslinking agent and the presence of oxygen in the dosimetric system were ...
  • Electrochemical Hydrogen Oxidation on Pt(100): a Combined Direct Molecular Dynamics/Density Functional Theory Study 

    Santana, Juan A.; Saavedra-Arias, José; Ishikawa, Yasuyuki (Electrocatalysis, 2015-08-09)
    We have studied the hydrogen oxidation reaction on various catalytic sites at the water/Pt(100) interface with first-principles direct molecular dynamics and minimum energy pathway calculations. The calculations indicate ...
  • Variations in the geostrophic circulation pattern and thermohaline structure in the Southeast Central American Pacific 

    Brenes, Carlos; Ballestero, Daniel; Benavides, Rosario; Salazar, Juan Pablo; Murillo, Gustavo (Revista de Biologia Tropical vol.64 suppl.1 s121-s134 2016, 2016-03)
    This study was conducted in the southeast region of the Central American Pacific, an area of great oceanographic importance due to the presence of various upwelling phenomena and the direct influence of the ENSO on its ...
  • Experimental validation of gallium production and isotope-dependent positron range correction in PET 

    Fraile, L.M.; Herraiz, J.L.; Cal-González, J.; Corzo, P.M.G.; España, S.; Herranz, E.; Pérez-Liva, M.; Picado, Esteban; Vicente, E.; Muñoz-Martín, A.; Vaquero, J.J. (Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment vol.814 110-116 2016, 2016-04-01)
    Positron range (PR) is one of the important factors that limit the spatial resolution of positron emission tomography (PET) preclinical images. Its blurring effect can be corrected to a large extent if the appropriate ...
  • Characterization of the VARIAN®PaxScan 2020+ flat panel detector for quantitative X-ray imaging 

    Geser, Federico Alejandro; Chacón, David; Figueroa, R.; Malano, F.; Santibañez, M.; Valente, M. (X-Ray Spectrometry vol.45 no.3 169-175 2016, 2016-02-19)
    In this work, the response of the VARIAN® PaxScan 2020+ flat panel detector was characterized in terms of spatial resolution and uniformity across the detection area along with detection efficiency for photon beams from ...
  • Sistema Nacional de Monitoreo de Tsunamis 

    Chacon-Barrantes, Silvia (Revista Universidad en Diálogo vol.5 no.2 101-111 2015, 2015)
    En cualquier cuerpo de agua, y más específicamente en cualquier océano, se pude generar un tsunami. Por esto, nuestro país, al tener dos costas, se encuentra expuesto a ellos. Los tsunamis no se pueden evitar ni pronosticar ...
  • Metodología para la Evaluación de Rutas de Evacuación en caso de Tsunami Aplicado a la Costa del Pacífico Norte y Central de Costa Rica 

    Rivera, Fabio; Arozarena Llopis, Isabel; Chacon-Barrantes, Silvia; Barrantes Castillo, Gustavo (Revista en Torno a la Prevención no.16 17-26 2016, 2016)
    Se ha diseñado un método con el objetivo de elaborar una cartografía de rutas de evacuación en caso de tsunami a escala 1:10.000, basado en las directrices establecidas por la Comisión Europea. Las áreas de estudio son las ...

View more